package com.syt.cart.controller;


import com.syt.cart.interceptor.CartInterceptor;
import com.syt.cart.service.CartService;
import com.syt.cart.vo.Cart;
import com.syt.cart.vo.CartItem;
import com.syt.cart.vo.UserInfoTo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import java.awt.event.ItemEvent;
import java.util.List;
import java.util.concurrent.ExecutionException;

@Controller
public class CartController {
    private final String PATH = "redirect:http://cart.mall.com/cart.html";

    @Autowired
    private CartService cartService;
    /**
     * 浏览器有一个Cookie:user-key用来标识用户身份吗,一个月后过期
     * 如果第一次施使用JD的购物车功能,都会给一个临时用户身份
     * 浏览器以后保存,每次访问都会带上这个Cookie
     *
     * 登录:session有
     * 没登陆:按照cookie里面带来user-key来做
     * 第一次:如果没有临时用户,帮忙创建一个临时用户
     * @return
     */
    @GetMapping("/cart.html")
    public String cartListPage(Model model) throws ExecutionException, InterruptedException {
        //1.快速得到用户信息
        Cart cart = cartService.getCart();
        model.addAttribute("cart",cart);
        return "cartList";
    }

    //添加商品到购物车
    @GetMapping("/addToCart")
    public String addToCart(@RequestParam("skuId") Long skuId, @RequestParam("num") Integer num, RedirectAttributes ra) throws ExecutionException, InterruptedException {
        cartService.addToCart(skuId,num);
        ra.addAttribute("skuId",skuId);
        return "redirect:http://cart.mall.com/addToCartSuccess.html";
    }

    /**
     * 跳转到成功页
     * @param skuId
     * @param model
     * @return
     */
    @GetMapping("/addToCartSuccess.html")
    public String addToCartSuccess(@RequestParam("skuId") Long skuId,Model model){
        //重定向项到成功页面.再次查询查询购物车即可
        CartItem cartItem = cartService.getCartItem(skuId);
        model.addAttribute("item", cartItem);
        return "success";
    }


    @GetMapping("/checkItem")
    public String checkItem(@RequestParam("skuId") Long skuId,@RequestParam("check")Integer check){
        cartService.checkItem(skuId,check);
        return PATH;
    }

    @GetMapping("/countItem")
    public String countItem(@RequestParam("skuId") Long skuId, @RequestParam("num") Integer num){
        cartService.changeItemCount(skuId, num);
        return PATH;
    }

    @GetMapping("/deleteItem")
    public String deleteItem(@RequestParam("skuId") Long skuId){
        cartService.deleteItem(skuId);
        return PATH;
    }

    @ResponseBody
    @GetMapping("/currentUserCartItems")
    public List<CartItem> getCurrentUserCartItems(){
        return cartService.getUserCartItems();
    }
}
